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73%? 00 DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice 0! Apr. 11, 1968, 849 0.6. 1221. Identification is by serial number of the application and the heading indicates the number 0! pages of specification, including claims, and of sheets 0! drawing contained in the application as originally tiled. The ills of this application is available to the public for inspection reproduction may be purchased for 30 cents per sheet.

Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Oflloe makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED OCTOBER 21, 1969 800,819 METHOD AND APPARATUS FOR APPLYING ADDITIVES TO CIGARETTE FILTER TOW Phara L. Cobb, Jr., PO. Box 511, Kingsport, Tenn. 37662 Continuation of application Ser. No. 519,737, Jan.

10, 1966. This application Feb. 10, 1969. Published Oct. 21, 1969 Int. Cl. B05c 1/12, 1/08 US. Cl. 156-456 4 Sheets Drawing. 23 Pages Specification Coating apparatus for applying additives to a bloomed, moving continuous filament tow. The apparatus includes first and second rolls arranged to form a nip therebetween through which the bloomed filter tow may be passed. The first of the rolls has formed thereon additive carrying circumferential grooves for picking up and transporting quantities of the additive from a supply tank to the tow passing through the nip of the rolls. The second roll has a resilient surface and is movably mounted in respect to the first roll so that the resilient surface can be pressed into the grooves on the first roll for regulating the amount of additive being applied to the bloomed filter tow. The first roll is provided with a doctor blade positioned to ride in the circumferential grooves to remove any additive left in the groove after the additive is appliedto the tow. 'Iheapparatus further has a detector for sensing and producing output signals proportional to the amount of the additive applied to the bloomed filter tow and operating means connected to the second roll to receive the signals of the detector to adjust the position of the movable second roll so that the amount of additive applied to the tow is maintained with a predetermined amount.

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AZ'TORNEYS 800 519 Oct. 21, 1969 P. 1.. COBB, JR DEF. PUB.

METHOD AND APPARATUS FOR APPLYING ADDITIVES T0 CIGARETTE FILTER TOW Original Filed Jan. 10, 1966 .4 Sheets-Sheet 2 FIG. 5

PHARA L. C088, JR.

Z I NVZN TOR. BY

A TTORIVEYS 600,8!9 Oct. 21, 1969 P. L. COBB. JR DEF. pus.

METHOD AND APPARATUS FOR APPLYING ADDITIVES TO CIGARETTE FILTER TOW Original Filed Jan. 10, 1966 4 Sheets-Sheet t5 E 5? pl EE i 5E m I i t i r: E PHARA 1.. 0089, JR. i h a. mvsmoa a v mam Q BY n QM'A'BY M ATTORNEYS Tao 00;

800,819 Oct. 21. 1969 P. L. coaa. JR DEF. PUB.

METHOD AND APPARATUS FOR APPLYING ADDITIVES TO CIGARETTE FILTER TOW Qriginal Filed Jan. 10, 1966 4 Sheets-Sheet 4 PHARA L. COBB, JR.

INVENTOR.

ATTORNEYS 

